Nobody with that strength today DOESN'T have Rybka (and/or other programs) running full bore to help with analysis and prep.
Saying it amounted to Rybka vs. Carlsen, Kasparov, and Kramnik is selling the Dream Team short. It was...
Topalov's Rybka
vs
Anand's Rybka, plus Carlsen with Rybka, plus Kasparov with Rybka, and plus Kramnik with Rybka.
Sometimes, it pays to not have a reputation as a jerk. Get a big enough reputation, and everyone wants to see you lose.
I know Kasparov is good, but is he so good that he can give worthwhile lectures to the current World Champion on opposite-coloured bishop endgames? 
Breaking news from Chessdom - Topalov was/is training on a super computer - http://players.chessdom.com/veselin-topalov/topalov-blue-gene-p. Apparently the machine cranks out 1 PFLOPS. Not sure exactly what that number adds up to, but I'm guessing that's like a gazillion times faster than my laptop. It would be fair to say that, in the coming matches, Topalov might start announcing "Mate in 3192" on move 1.
The story is that the Topalov team had access to four twelve-core machines and eight eight-core systems all connected into a cluster of 112 processors. This awesome hardware was running a cluster version of Rybka 4 that was not available to anyone else.
See article here:
http://www.chessbase.com/newsdetail.asp?newsid=6340
This is what a computer cluster looks like – with just 52 cores. Topalov's had 112.
Breaking news from Chessdom - Topalov was/is training on a super computer - http://players.chessdom.com/veselin-topalov/topalov-blue-gene-p. Apparently the machine cranks out 1 PFLOPS. Not sure exactly what that number adds up to, but I'm guessing that's like a gazillion times faster than my laptop. It would be fair to say that, in the coming matches, Topalov might start announcing "Mate in 3192" on move 1.
Apparently PFLOPS stands for "Peta Floating-Point Operations Per Second"
and 1 Petabyte = 1024 Terabytes i.e.: 1 000, 000, 000, 000, 000
Not that that Rybka version was able to utilize all that computing power... but yes, it was a nice tool. In the end, OTB the players had to play for themselves, and there were enough errors. Topalov's preparation seemed to pay off though, as he got good games out of the opening. Anand faltered the first game, and in a few games near the end -- the last game came down to Topalov's mental toughness, and he collapsed, fearing a playoff loss he evidently preferred to lose immediately.
Computers and phone calls from former WC are nice, but ultimately it's one on one.
Here's the interview with Anand, published by ChessBase - http://www.chessbase.com/newsdetail.asp?newsid=6346.
So Topalov had Rybka 4 running on 112 cores, and Anand had Carlsen, Kramnik and Godfather Garry on his side, with of course young Anish and his fab-four team of PH, Kasim, Surya and Radek. Now that we know how the match ended, perhaps Rybka still isn't quite a match for the strongest chess brains in history. Come to think of it, only 5 players have ever breached the 2800+ barrier in chess, and all of them figure in this match, albeit the balance is tipped in Anand's favor. Anand, Kramnik, Carlsen, Garry vs Topalov.
Kramnik perhaps wouldn't want Topalov to win a World Championship, certainly not by beating Anand (to whom he lost in 2008). Carlsen of course, is an old confidant..but Garry ?? The plot thickens....